
/**
 * 判断当前年是否是闰年
 * @param {Object} year
 * @return 返回1表示闰年 0表示不闰年
 */
function judgeLeapyear(year){
	return year % 4 == 0 ? (year % 100 != 0 ? 1 : (year % 400 == 0 ? 1 : 0)) : 0;
}

/**
 * 获取指年份的相关信息
 * @param {Object} year 年份
 * @return
 */
function getYearInfo(year){
	var $year = year.getFullYear();
	var $month = year.getMonth();
	var $day = year.getDate();
	var $firstday = new Date($year, $month, 1); //获取当月的第一天
	var $firdayOfWeek = $firstday.getDay(); //判断第一天是星期几 0表示星期天。。。。。
	var $smallMonthDays = 30;
	var $bigMonthDays = 31;
	var $leapMonthDays = 28 + judgeLeapyear($year);
	var $daysArrMonth = new Array($bigMonthDays, $leapMonthDays, $bigMonthDays, $smallMonthDays, $bigMonthDays, $smallMonthDays, $bigMonthDays, $bigMonthDays, $smallMonthDays, $bigMonthDays, $smallMonthDays, $bigMonthDays); //创建月份数组
	var $tableRows = Math.ceil(($firdayOfWeek + $daysArrMonth[$month]) / 7); //日期表格行数
	
	var retYearInfo = {
		/** 当前年 */
		year : $year, 
		/** 当前月 */
		month : $month,
		/** 当前日 */
		day : $day,
		/** 当月的第一天 */
		firstday : $firstday,
		/** 当月第一天是星期几 0表示星期天... */
		firdayOfWeek : $firdayOfWeek,
		/** 月份数组 */
		daysArrMonth : $daysArrMonth,
		/** 日期表格行数 */
		tableRows : $tableRows
	}
	return retYearInfo;
}

/**
 * 创建表格的标题栏
 * @param {Object} flag
 */
function calendarTableThHtml(flag){
	return "<th>日</th><th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th>六</th>";
}

var LunarDate = {  
    madd: new Array(0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334),  
    HsString: '甲乙丙丁戊己庚辛壬癸',  
    EbString: '子丑寅卯辰巳午未申酉戌亥',  
    NumString: "一二三四五六七八九十",  
    MonString: "正二三四五六七八九十冬腊",  
    CalendarData: new Array(0xA4B, 0x5164B, 0x6A5, 0x6D4, 0x415B5, 0x2B6, 0x957, 0x2092F, 0x497, 0x60C96, 0xD4A, 0xEA5, 0x50DA9, 0x5AD, 0x2B6, 0x3126E, 0x92E, 0x7192D, 0xC95, 0xD4A, 0x61B4A, 0xB55, 0x56A, 0x4155B, 0x25D, 0x92D, 0x2192B, 0xA95, 0x71695, 0x6CA, 0xB55, 0x50AB5, 0x4DA, 0xA5B, 0x30A57, 0x52B, 0x8152A, 0xE95, 0x6AA, 0x615AA, 0xAB5, 0x4B6, 0x414AE, 0xA57, 0x526, 0x31D26, 0xD95, 0x70B55, 0x56A, 0x96D, 0x5095D, 0x4AD, 0xA4D, 0x41A4D, 0xD25, 0x81AA5, 0xB54, 0xB6A, 0x612DA, 0x95B, 0x49B, 0x41497, 0xA4B, 0xA164B, 0x6A5, 0x6D4, 0x615B4, 0xAB6, 0x957, 0x5092F, 0x497, 0x64B, 0x30D4A, 0xEA5, 0x80D65, 0x5AC, 0xAB6, 0x5126D, 0x92E, 0xC96, 0x41A95, 0xD4A, 0xDA5, 0x20B55, 0x56A, 0x7155B, 0x25D, 0x92D, 0x5192B, 0xA95, 0xB4A, 0x416AA, 0xAD5, 0x90AB5, 0x4BA, 0xA5B, 0x60A57, 0x52B, 0xA93, 0x40E95),  
    Year: null,  
    Month: null,  
    Day: null,  
    TheDate: null,  
    GetBit: function(m, n){  
        return (m >> n) & 1;  
    },  
    e2c: function(){  
        this.TheDate = (arguments.length != 3) ? new Date(): new Date(arguments[0], arguments[1], arguments[2]);  
        var total, m, n, k;  
        var isEnd = false;  
        var tmp = this.TheDate.getFullYear();  
        total = (tmp - 1921) * 365 + Math.floor((tmp - 1921) / 4) + this.madd[this.TheDate.getMonth()] + this.TheDate.getDate() - 38;  
        if (this.TheDate.getYear() % 4 == 0 && this.TheDate.getMonth() > 1) {  
            total++;  
        }  
        for (m = 0; ; m++) {  
            k = (this.CalendarData[m] < 0xfff) ? 11: 12;  
            for (n = k; n >= 0; n--) {  
                if (total <= 29 + this.GetBit(this.CalendarData[m], n)) {  
                    isEnd = true;  
                    break;  
                }  
                total = total - 29 - this.GetBit(this.CalendarData[m], n);  
            }  
            if (isEnd)  
                break;  
        }  
        this.Year = 1921 + m;  
        this.Month = k - n + 1;  
        this.Day = total;  
        if (k == 12) {  
            if (this.Month == Math.floor(this.CalendarData[m] / 0x10000) + 1) {  
                this.Month = 1 - this.Month;  
            }  
            if (this.Month > Math.floor(this.CalendarData[m] / 0x10000) + 1) {  
                this.Month--;  
            }  
        }  
    },  
    GetcDateString: function(){  
        var tmp = "";  
        tmp += this.HsString.charAt((this.Year - 4) % 10);  
        tmp += this.EbString.charAt((this.Year - 4) % 12);  
        tmp += "年 ";  
        if (this.Month < 1) {  
            tmp += "(闰)";  
            tmp += this.MonString.charAt(-this.Month - 1);  
        } else {  
            tmp += this.MonString.charAt(this.Month - 1);  
        }  
        tmp += "月";  
        tmp += (this.Day < 11) ? "初": ((this.Day < 20) ? "十": ((this.Day < 30) ? "廿": "三十"));  
        if (this.Day % 10 != 0 || this.Day == 10) {  
            tmp += this.NumString.charAt((this.Day - 1) % 10);  
        }  
        return tmp;  
    },  
    GetcDateDayString: function(){  
        var tmp = "";  
        //tmp += this.HsString.charAt((this.Year - 4) % 10);  
        //tmp += this.EbString.charAt((this.Year - 4) % 12);  
        //tmp += "年 ";  
        //if (this.Month < 1) {  
        //    tmp += "(闰)";  
        //    tmp += this.MonString.charAt(-this.Month - 1);  
        //} else {  
        //    tmp += this.MonString.charAt(this.Month - 1);  
        //}  
        //tmp += "月";  
        tmp += (this.Day < 11) ? "初": ((this.Day < 20) ? "十": ((this.Day < 30) ? "廿": "三十"));  
        if (this.Day % 10 != 0 || this.Day == 10) {  
            tmp += this.NumString.charAt((this.Day - 1) % 10);  
        }  
        return tmp;  
    }, 
    GetLunarDay: function(solarYear, solarMonth, solarDay) {  
        if (solarYear < 1921 || solarYear > 2020) {  
            return "";  
        } else {  
            solarMonth = (parseInt(solarMonth) > 0) ? (solarMonth - 1): 11;  
            this.e2c(solarYear, solarMonth, solarDay);  
            return this.GetcDateString();  
            //return this.GetcDateDayString();
        }  
    }  
};
